CARLSON, A. B., CRILLY, P. B., & RUTLEDGE, J. C. (2003). Communication systems: An introduction to signals andnoise in electrical communication.-- ed.4. McGraw-Hill.

CARLSON, A. Bruce, Paul B. CRILLY, and Janet C. RUTLEDGE. Communication Systems: An Introduction to Signals Andnoise in Electrical Communication.-- Ed.4. Boston: McGraw-Hill, 2003.

CARLSON, A. Bruce, et al. Communication Systems: An Introduction to Signals Andnoise in Electrical Communication.-- Ed.4. McGraw-Hill, 2003.